A memorial service for Dr. Margaret Maxwell, a longtime Charles St. resident and former Finch College professor who died April 17, will be held at 3 p.m. Sat., June 9, at the Birch Wathen Lenox School, 210 E. 77th St. Her family suggests contributions in her memory to the Finch College Alumnae Association, 1471 Third Ave., #213, NY, NY 10028 or to New York University, 25 W. Fourth St., 4th Fl., NY, NY 10012, or to a beneficiary of choice.